Hash-Based Tag Ownership Transfer Protocol against Traceability

In the real society, the owner of a tagged object may transfer its ownership to another party. An ownership transfer must satisfy the forward and backward untraceability. It is a new problem in the research of RFID security and privacy. In this paper, a simple and efficient security protocol, HBOT, for lightweight RFID tags with support for ownership transfer is proposed. The new protocol is based on hash function. It is deeply analyzed and it achieves a very strong notion of security that is necessary in RFID ownership transfer: forward and backward privacy. It is also obtained higher performance.